Blower for boilers.



E. B. BABNHILL.. LWER FOR BOILERS.

APPLIUATIQN FILED PBB.21,1910.

Patented Jan. 24, v1911;.

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im.; or nn'rnorr, salesman, As'sIGNon '.ro Dumon-D row;

EDWARD rarnn'r OFFICE.

`l-;-5misLTY`poMPAnY, or DETROIT, MICHIGAN; COPARTNEBSHIP.

' BLOWER ron normas.

Specification' of residing at Detroit, in the county of Wayne and State of Michigan, havey invented certain' new and useful Improvements in Blowerspior Boilers, of which the following is a speication, reference being had therein to 'i the accompanying drawings. g 1o This invention relates to improvements in blowers for boilers and more particularlyV to a blower especially adapted for use 1n blowing tubular boilers of the marine type having several banks of'tubes.

The ob'ect ofthe invention 1s to provide ,a simple and ecient device for the purposewhich is so constructed as to adapt it to be i mounted within the breeching of a boiler and "to be turned therein to 'direct jets of steam into the several rows of tubes and so constructedthat. it will operate upon all of the tubes of a boiler when said tubes are arranged in several banks varying iu height.

A further object is to so construct the de vice that it will also operate to blow the tubes of an air heater when such a device is mounted in the usual way upon the boiler breeching. v With these and other objects in View, the invention consists in the. construction arran ement and combination of p'ai'ts as hereina er more fully described and particularly fpointed out in the claims reference being had to the accompanying dra-wings, in Whichl f Figure 1 is a sectional end elevation of a boiler showing a blower embodying the invention in place for-use thereon gA and Fig. 2 is a vertical longitudinal section of the same showing one end of the boiler.

As shown in the drawingv 1 represents a marine boiler of the usual construction, hav! ing fire tubes'2 which are arranged in banks or gropps, groups 3 and 4 beinglocated adjacent to each side of the boiler and group 5 lying between the other groups in the cen- A ter line of the boiler and extending down- 'ward in the usual manner a short distancev 'A below the other groups between the tire 10 having vertical smokeilues 11 through whichv the products 'of combustion pass onJV Application led February 21, 1910. Serial lo'. 546,049.

their way 'to the stack and around which ai-r is circulated in the usual manner by means (not shown) for inducing a forced draft and supplying the heated'air to thevre chamber. The blower consists of a'ixed steam pipe 12 extending horizontally throughthe lower part of the breeching and a steam' supply pipe 13 leading from the to of the boiler or other source of steam un er pressure, to one end of the pipe 1 2, the valve 14 being interposed in the pipe 12 adjacent to-.its

junction with the pipe 13 to shut off steamfrom the pipe 12 I A steam pipe v15 is rotatably mounted in the' breeching and extends parallel with the pipe 12 to one end ofwhich pipe it is connected by a short vertical branch 16.. and' at its opposite end to the supply pipe 13 by a short non-rotative branch 17 within which is a shut od' valve .18 to control the How of steam into said pipe 15 from the pipe 13.

Suitable joints 19 are provided to connect l the ends of the pipe 15 with the branches 16 and 17 to permit the free rotation of the pipe 15 and prevent the escape vof steam from the joint. A laterally extending'loop forming a header 20 is secured to the `pipe 15 within the breeching by short branches 21 extending laterally from the pipe 15 near cach side wall of the breeching and these branches are connected by a pipe extending .parallel with the pipe 15 andprovided with sof' a series of jet nozzles 22, a nozzlebeing provided for each vertical row of boiler tubes. When the steam pipe 15 is turned,the header 20 is rotatedY about said pi'pe and the nozzlesare thus brought successively into position to direct a jet of steam into eachof the tubes, and also into the lower ends of the tubes ll of the heater. v

The central bank 5 of tubes being longer than the side' banks 3 ande, it is-neces'sary to provide an extension 23 forming a second header in order tof reach the lower horizontalrows of thetubes in the center bank and -thi's pipeieonnected to. the pipe 20 by 10oA f shortfbrildlies 24 extending laterally from th,pipel.20 at-rightangles to the `direction of the short branches'21'. The pipe 23 is provided with jet nozzles`25 to direct steam into the ends of the tubes. i y The ipe 15 with lits headers 20 ,and 2 3 is turnedlb l to the pipe15'vou'tsilde of the'breeching and the worin gearzis .engaged by a 'worin,227,4Y

y meanslof a worm gear 2 6 secured los" upon a shaft 28 mounted horizontally in Abearings on the bi'ecching. The shaft 28 is turned by means of a hand wheel 29 or other suitable device. v.

Owing to the large number of jet nozzles,`

would be necessary to prevent the steam` res-sure from bein@V eatlv reduced.

obviate this contingency, a blank coupling.

30 forming a division wall is inserted in the pipe at the center line of the boiler and similar vblanlir couplings 31 and 32 are inserted in the pipes 20 and 23 respectively.

Steam entering lthe pipe 15 through"the branch 17 .is thus stopped olf atthe center of the boiler,. and if the valve 14 is at the same time closed,- steam will be entirely shut off from one half' of the jet openings and one half ofthe tubes of the boiler' will be blown. By closing the valve 18 and o ening the valve 14 steam will be admitte to the other end of the blower to blow theother halt of the boiler tubes.

.In the construction'of the blower, 4common iron'pipe m-ay'bensedand thus a very cheap construction is secured and the particular Y arrangement provides for blowing all ofthe tubes in the boiler with a single rotatable nozzle member. I

It is obvious that the use o'f-th'e header 23 may be dispensed with inf-boilers of a construction which does not require such an extension in order toreach all of the tubes, and other details of theconstruction and arrangement btiparts may be changed without 'departingrom the 4spirit of my invention and I therefore do not wish to limit Anyself to the particular construction shown.

Having thus fully described my invention wliatIclai isrl. A device of the character Idescribed comprising af'rotatable steam pipe,"a branch pipe extending Vlaterally from the rotatable pipel` a header pipe attached to the free end nt' the hranch pipe and provided with a series nl' jet openings and means extending froml the header pipe and forming a second-header carried by the firat'header to turn therewith when the rotatable pipe is turned.

A device .of the (.'hzi'racter described comprising a rotatable pipe,a laterally extending branch on the rotatable pipe, a header on the frceend ot' thc branch pipe extending parallel with the rotatable pipe, a

branch pipe extending laterally from the l1n presence of two witnesses.

header' at un angle to the branch pipe connecting the header aio-l the rotatable pipe, :and a second header pipe on the end of the u() rranch pip: lwanting from the first header.

3. A device ot the character ldescribed comprising a rotatable steam pipe, means intermediate` the ends of said pipe forming a divisionwall therein, branch pipes extending laterally from the rotatable pipe, a header pipe connecting the free ends of tl'ie branch pi es, means .intermediate the ends of the hea er forming a division wall, means tor conducting steam into each end of the rotatable pi e,.and valvescontrolling the admission o steam to said ends.

4. A device of the character described comprising a rotatable ipe having means intermediate' its ends orming a division wall, a supply pipe connected to one end of the rotatab e pipe, a. pipe extending arallel with the rotatable pipe and connecte to the opposite end thereof, said parallel (pipe being connected at the opposite en steam 'table pipe, a valve, controlling the 'flow of "steam from the supply pipe into theA parallel pipe, laterally extending branch pipes' on the rotatable pipe, a header pipe attached to the free endsnof the branch pipes,and means intermediate the ends of the header pipe forming alivision wall.

5. The combination with the breeching of a boiler, of a steam pipe extending horizontending through the breeching, a pipe rotac tively mounted in the breeching and extending parallel with the horizontal pipe, a branch pipe connecting one end of the rotatable pipe with the suppty pipe, a branch pipe Vconnecting the opposite end ot' the rotatable pipe with the horizontal'pipe, vmeans on the rotatable pipe outside of the breeching for'rotating said pipe, laterally extending branch pipes upon the rotatable pipe within the brccching, a header connected to the free ends of said branch pipes, and means within the rotatable pipe 'and header pipe intermediate the ends thereof formin division walls.

In testimony whereof I' aliix my signature.

EDWARD B. BARNHTLL. Witnesses:

I G. E. MCGRANN,

S. J. ll. EMERSON.

to the'v Vsupply pipe, a valve controlling the flow of p from the supply pipe into the rota- 

